PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/10/17-21:27:50
G01     320.2          15.9                8.7 +/-    3.05      21.3 +/-    3.05  0.170 / 0.440
G08     263.2          15.8               11.2 +/-    1.67      27.2 +/-    1.67  0.140 / 0.520
G10     73.4           53.9               10.6 +/-    0.31      12.7 +/-    0.31  0.180 / 0.520
G11     309.1          18.6               10.6 +/-    1.24      24.2 +/-    1.24  0.180 / 0.320
G14     274.1          66.6               12.3 +/-    0.59      13.3 +/-    0.59  0.220 / 0.610
G20     102.1          30.7               13.2 +/-    0.67      22.7 +/-    0.67  0.220 / 0.490
G21     156.1          10.3               14.4 +/-    2.33      39.7 +/-    2.33  0.040 / 0.070
G27     227.4          12.4               12.4 +/-    4.83      32.8 +/-    4.83  0.050 / 0.070
G31     176.1          37.2               15.0 +/-    1.58      22.8 +/-    1.58  0.180 / 0.360
G32     359.7          70.5               11.1 +/-    0.85      11.7 +/-    0.85  0.190 / 0.370